Trolley contactor



Sept. 29, 1931. s. s. STOLP TBOLLEY CONTACTOR Filed June 11, 1928 I N V EN TOR. Jamlke/ J. .17044 B Y )1 MW. .r.

m ATTORNEY.

Patented Sept. 29, 1931 UNITED sTATEs SAMUEL s. STOLIP, F LOUISVILLE, xnnmucxsrfhssienon ro CHEATH'AM nnnornro SWITCHING nnvicnqonrnnr TROLLEY coisiprno'roni i Application filed June 11,

The object of my invention is to improve the nature and construction of trolley contactors or otherwise known as trolley pans of the class and character mounted on electric railway overhead trolley wire so ar- I pan for the purpose of energizing solenoids of an electric switch or point throwing device disposed in the ground adjacent the rails.

An outstanding object being to prolong the life of the several members composing the trolley pan by interposing an arc barrier or are dissipator in a more advantageous way than has been used heretofore.

For a detailed description of my inveni0 tion, reference is to be hadto the accompanying drawings, forming a part hereof, in wh1ch- Fig. 1 is a perspective of a sectionof the trolley pan. Fig. 2 is a cross section of Fig.

2'5 1 along the line A, A. Figs. 3 and l are details of the terminals employed on the trolley pan as shown in Fig. 1.

Fig. 5 is a cross-sectional View on line 5- -5 of Fig. 1 and Fig. 6 is a cross-sectional view on line 6--6 of Fig. 1. r

The invention is embodied in a trolley pan or trolley contactor structure which is suspended adjacent an overhead trolley wire using the latter as a locating means and support. Span wires from side mountings are usually disposed on poles or walls at the side of the road on which the trolley line operates and are tied into the trolley pan in one of the several accepted and conventional ways so that the wiring of the pan" will not be displaced materially when the trolley wheel, under the spring pressure carried by a car, contacts the pan. One end of the pan is shown in Fig. 1 with the trolley wire 11 in dotted lines. The wire passes through bracket 12 and is clamped on the inside of the bottom or trough of the member by the usual cam-operating lever not shown but well known in the art and illustrue relation to the ftrolley wheel.

492s. Sam- 284,63e. 4 v I v I .trated for'examplelin U. S. patent to Kempton, No.g1,166,912. The trolley wire is, therefore; bent upward and through the grooved structure 19 shown centrallyat the "top of Fig.1. ,{Thissame form of" mounting is employed at the other end of thetro'lley "pan. Itjwillhbe noted that the trolley wheel will engage metallicfacingsflii, 13 and then pass ou to the successive spaced pairs of .metallic. facings 14, 14fand115, 16' arranged in opposed.relation on opposite sides of the axis of the pan; As is evident from Fig. l

the fa cings 13, -14 fandg-lo' on oneside are mounted on: the bottom .face of aninsulated bar, 17., preferably constructed of wood. In

like mannerthelfacing's 1 3,'14 and 16 on the opposite side are supported beneath, theksimilar bar 18. The bars 17 and-18 are con nested to the facings 13,13 and thus these "bar's-form direct connections between the two brackets lQ at opposite ends of the trolley wheel will draw current. from insulated .contactor' face 15.,and pass on to insu- ,.lated face 14 and draw an arc embracing these two faces, which been notably destructive ofthe insulating members 17 and 18,. -To more completelybrea'klupthis arc, which not only passesfrom the 'faces,"just' r ferred 'to,jbut' Often reaches upto the trol- *ley"wir e'ab'ove and holds are especially "during certain atmospheric conditions, the

Proceediri g iin the normalidireiction, the

new type arc'barrier'; 19 has been t0 meet; these" extreme conditions. Bracket 1 12 is fashioned' withlan elongated verticalslot op the'in er" or centrally disposed end into "which is inserted anend 19a, formed integrally with "the body 19' f ofithe new'type'arc barrier, which is preferably composed or material carrying a high 1 asbestos "content. 'Screws 20 are threaded into the bracket 12 'and: engaged 19d a to further locate'and stabilize the ar'c bar'rier. g 1

in substantiallyits full size form andfit It is shown here effectively protecting the faces il5 and l6 a'swell as trolley wire 11. -Attenvffiib is called to the factathat'. this barrier V is completely supported by the bracket and ct carrying insulating material with elecan arc dissipator disposed in substantially that it does not contact in any way with other insulation, which effects perfect drainage for water and a free circulation of air,

which makes for the breaking up of the destructive are not only by its own insulation but by providing a free circulation for the heated air to carry the arc upward and away from the adjacent parts and trolley wire 11. i

In Fig. 2, a bolt 21 is shown extending through insulated bar 17, the lower end being threaded into metallic facing 15 while the head of this bolt is fashioned witha countersunk opening 22 to receive fiat head wrew 23. The head of this bolt is crossmilled, off the center, to' provide. grooves 24, the bottom of which registers with the fioor of countersunk opening 22, with a lip 7 21a and an arcuate wall 22?). Into tapped hole 220 of bolt 21, screw 23 is disposed, under the head of whichis securely lodged and so positioned as to provide air spaces between same and said bars.

In testimony whereof I afiix my signature.

SAMUEL S. STOLP.

wire 25, the lip 21m and wall 22?) serving to prevent it from becoming misplaced during tightening operation.

Many variations ofthis structure may be made withoutdepartingfrom the spirit of myinvention, therefore. I wish to be limited only by the following claims:

1. A trolley pan with a supporting bracket and a separable arc dissipator engaging said structure.

2. A trolley pan with a supporting bracket and a separable arc dissipator attached vertically thereto.

3. A trolley pan structure with a supporting bracket, carrying bars and a separable arcdissipator engaging said structure.

4. A trollev pan with a supporting bracka vertical plane and so positioned as to provide air spaces betweensame and said bars.

. .7. A trolley pan with segmental conducting bars carried by a supporting bracket equipped with an arc dissipator disposed adjacent the gap, formed by said contacting bars, in substantially a vertical plane and so positioned as to provide air spaces between same and said bars.

8. A trolley pan with segmental bars-carried on a supporting bracket equipped with an arc dissipator attached solely thereto and disposed in substantially a vertical plane 

